using System.Collections.Generic;
using System.Text.Json.Serialization;

namespace PayRollBLL.SAPPaySlip.DTO
{
    // Represents the top-level OData envelope: { "d": { "results": [...] } }
    public class SapPaySlipODataResponse
    {
        [JsonPropertyName("d")]
        public SapPaySlipODataData D { get; set; } = new();
    }

    public class SapPaySlipODataData
    {
        [JsonPropertyName("results")]
        public List<SapPaySlipODataItem> Results { get; set; } = new();
    }

    // Maps each record returned by the SAP ZPY_PAYSLIP_SRV OData service.
    // __metadata is intentionally omitted — JSON deserialization ignores unknown fields.
    public class SapPaySlipODataItem
    {
        [JsonPropertyName("EmployeeID")]
        public string EmployeeID { get; set; } = string.Empty;

        [JsonPropertyName("FiscalYear")]
        public string FiscalYear { get; set; } = string.Empty;

        [JsonPropertyName("Month")]
        public string Month { get; set; } = string.Empty;

        // Base64-encoded PDF generated by Adobe LiveCycle Designer on the SAP side.
        // Callers should decode with Convert.FromBase64String() and serve as application/pdf.
        [JsonPropertyName("PayslipForm")]
        public string PayslipForm { get; set; } = string.Empty;
    }

    // Clean outbound DTO returned to the API consumer.
    public record SapPaySlipResultDTO(
        string EmployeeID,
        string FiscalYear,
        string Month,
        string PayslipForm
    );
}